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authorLudovic Courtès <ludo@gnu.org>2016-09-06 23:14:07 +0200
committerLudovic Courtès <ludo@gnu.org>2016-09-06 23:22:10 +0200
commit01afdab89c6a91f4cd05d3c4f4ff95a0402703eb (patch)
tree7be146245b7b7053532f38476399e5b8f5b2f9c4 /gnu/packages.scm
parent03763d6473bcd6c7a84bcc3a6aa7bc2d1ee1e44f (diff)
downloadguix-01afdab89c6a91f4cd05d3c4f4ff95a0402703eb.tar.gz
packages: Add 'package-superseded' and associated support.
This provides a way to mark a package as superseded by another one.
Upgrades replace superseded packages with their replacement.

* guix/packages.scm (package-superseded, deprecated-package): New
procedures.
* gnu/packages.scm (%find-package): Check for 'package-superseded'.
* guix/scripts/package.scm (transaction-upgrade-entry)[supersede]: New
procedure.  Call it when 'package-superseded' is true.
* tests/guix-build.sh: Add test for a superseded package.
* tests/packages.scm ("package-superseded")
("transaction-upgrade-entry, superseded package"): New tests.
Diffstat (limited to 'gnu/packages.scm')
-rw-r--r--gnu/packages.scm9
1 files changed, 8 insertions, 1 deletions
diff --git a/gnu/packages.scm b/gnu/packages.scm
index 68a9eef2ad..5d60423a3a 100644
--- a/gnu/packages.scm
+++ b/gnu/packages.scm
@@ -305,7 +305,14 @@ return its return value."
      (when fallback?
        (warning (_ "deprecated NAME-VERSION syntax; \
 use NAME@VERSION instead~%")))
-     pkg)
+
+     (match (package-superseded pkg)
+       ((? package? new)
+        (info (_ "package '~a' has been superseded by '~a'~%")
+              (package-name pkg) (package-name new))
+        new)
+       (#f
+        pkg)))
     (_
      (if version
          (leave (_ "~A: package not found for version ~a~%") name version)